Window scaffold



Feb. 27, 1923. r

M. DWORK.

WINDOW scAFFoLD.

FILED OCT. 34. 19,22.,

2 SHEETS-SHEET s.

l IME/Wol? A TTOHA/EYS Patented Feb.. 27, 1923.

.application mea october si, ieee. serial No. 598,147.

of `New York, have invented certain -new and useful Improvements in Window Scaf- 'folds, of which the following is a specica'- tion.

This -inventionrelates to devices adapted for use in connection with window cleaning and has for its object the'provision of a 'safe and reliablesupport for persons employed in 'dangerous tasks such as' cleaning the outside of windows and where it is necessary for such persons to place themselves beyond the outer wall of the building. A further object of the invention is the provision of ay support which furnishes not only a comfortable seat, for a person employed in dangerous" tasks and sufficient room for conveniently holding articles and implements intended for use in the occupation2 but a safeguard'against accidental precipitation from the support. Y

Another object of the invention is the provision of a device of such a `czh-aracter that the same may be vfolded into a small and compact unit for storage or transporta tion and which'may'be readily setup and applied to a window yin a short space of time. .l l, v

Other objects and advantages will become apparent during the course of the Yfollowing description.

yThe invention 1s illustrated by wayl of example in the accompanying drawings, in which, u c

Figure 1 is a view inperspectiveof my improved scaifold applied to ar window frame. l

Figure 2 is a transverse vertical section ofthe scaffold. n l

VFigure 3 is a `view in perspective of the scaifold folded into ya neat and compact unit, showing one of the locking pins detached from its holder.

Figure 4 is a fragmentary view insection disclosing the adjustable supports for the seat. .l Figure 5 is av transverse section of the supporting rod adapted to engage the window frame disclosing the means for adjustingthe ends of the rod.` 4

eferring to the drawings, the letter A deslgnates the seat, B the back and C the kfoot rest. The seat A is composed :of

spaced parallel` bars 1, 2 and 3 equipped Wlth a pluralityof'spaced slatsa. 7 pon thepouter ends 'of the bars 1, '2 and' 3 is'` mounted a rod 45 the ends of the bars be# ing turned as at 5 to form sockets; for said rod. l. i

Pivotally' connected at their lowerends to the rod 4 ar'e bars Gand 7 which are equipped with a plurality of spaced slats y8, the 'sl-ats being rigidly secured to 'said bars. The upper ends of the barstA andy 7' y are provided with sockets k9 to "receives rod 10; n

4 Rigidly securedj'to .the 4outer lends ofthe bars'132 and 8 are stops 11 which are loy cated 1n the path ofthe rocking bars 6 andv .y 7 to prevent accidental forward movement 1- ofthe back B upon thefjseat A"when` the scaffold. is located in an operative position withfre'spect to 'a window frame. The seat MAX DWORK, 0F BROOKLYN, YORK.

framev 13v 'with the sidele'dges of fthe yseat located between the vertical sidemembers of the frame.l l

A rod 14 is mounted upon the'lfor'ward y@mi ofthe, bars 1,l 2 and e with ,the forward ends-ofthe bars being tin-ned to.. provide sockets for supporting said rod.v V.The rod .14 is hollow and is adapted topreceive the headed adjustable' rods 15 and'16 which are A f slidablewithin the rod 1 4 and held inlplace j by means Yof setscrews '.17 'lheslidable rods'15 and 16 are adapted to yengage the,

inner edges of. .the `window frameplafor maintainingthe seatfupon the ysill 122and noy 'l preventing slippage'of the seat from vsaid y spaced vslats 20.. The lower ends ofthe bars 18, and'19xare turned outwardly at sill. Yli'votally connected to ftherodp14l are bars 18and 19 which areV equipped with 95j y mov the plane of said bars for a purpose which withthe folding ofthe scaffold into a neatly packed unit.

Guides23 are rigidly secured tothe `*bars 1', and v25a-ndproj ectlaterally fromthe sides4 l d will be. presently ydescribed in connection` of the seat Aand are adapted to sli'dably receive a brace 24 for each guide. braces24 are `providedvvith teethg25galong one longitudinal edge and. .with teeth`26' The along vthe other longitudinal edge butler-p tended'in a direction which is opposite to the direction of extension of the teeth 25 so that When the brace is located within the yguide 23 the teeth 25 will engage the inner edge 27 of the guide while the teeth 26 will engage the rear edge 28 of said guide whereby the brace 24 will be held in rigid position when the lower rein-forced end 29 of said brace is in engagement with the outer wall 30 of a building. A set screw 31 mounted in the guide 23 is adapted to engage the' brace 24 and lock said brace in position.

'A chain 32 is connected with each of the bars 6 and 7 and provided with a ring 33 adapted to be slipped on the rod 14. The set-screws 17, which .provide means for securing the rods 15 and 16 in any of Vtheir adjusted posit-ions will prevent slipping or accidental disengagement of the rings 33 from the rod 14.

Chains 34 are provided with rings 35 which are slipped on the rod l0 and are provided with a link 36 at their inner ends adapted to engage with a hook 37 secured inthe outer edges of the window frame 13. Chains 38 are'secured to the bars 6 and 7 and are extended upwardly and connected with the .chains 34 for strengthening the connection between the upper end ot' the seat A and the window-frame 13. A chain 39, which is loosely swung between the pair of chains 34, is provided with rings 40 which are for the purpose of supporting cloths and which are conveniently located in front of the person cleaning the window. The chains 39 may be employed for the purpose of supporting a bucket filled with proper cleaning fluid.

When the scaliold has been removed from the window it may be folded into a neat and compact unit as shown in Figure 3 withy the backV B Afolded in the direction indicated by the arrow in Figure 2 so that the back of the'seat is located in face to face engagement with the under side of the yseat A.

The offset portion 41 of the bars 18 and 19 of. the seat A. The scaffold, when folded in ythis manner; makes a compact and unitary structurev for storage and transportation purposes.

WhileI have herein shown and described the preferred form of my invention, it is to lbe understood that various changes and modications may be made herein without departing from the spirit, or the invention or the'spirit and scope of the appended claims.

`What l claim as new is:

1. A device of the character described comprising a seat adapted to be supported on a sill of a window trame, a back pivotally connected to a longitudinal edge of the seat, a rod having extensible ends engageable with the inner edges of the frame. mounted on the other longitudinal edge of the seat, a foot rest pivotally mounted on the rod, depending from the rod, and adapted to engage the wall of a' roombelow the window sill, chains Isecured to the'baclr and adapted to be connected with the window frame, chains connectingthe'back with the rod on the seat, said chains and rodl cooperating to hold the back and seat von the window frame, braces yadjustably mounted on the Vseat and engageable with the Wall of a building for aiding in supporting the seat, and means connecting certain of the chains for supporting implements.

2. A device of the character Adescribed comprising a seat adapted to be supported on the sill of la window frame, a back pivotally connected to the seat, a toot rest pivotally connected to said seat7 means on the inner end of the seat adapted to engage the inner edges of the window frame, and means secured to the back and adapted to be connected with the Window frame, and adjustable means slidably connected with the seat and engageable with 'the wall of a building for aiding in supporting the seat.

3. A device of the character described comprising a scaffold adapted to be removably mounted on a sill of a window frame, comprising a seat adapted to rest on the sill, a back pivotally connected with the seat, a plurality of chains secured to the back and adapted to be connected with the window frame, means on the inner edge of the seat engageable with the inner edges of the window frame for maintaining the seat 0n the sill, a foot rest depending from the inner end of the seat and embracing the inner edge of the sill of the window frame, and braces slidably mountedk on the seat and having free ends projecting inwardly from said seat adapted to engage the wall of'a building.

4. A window scaffold comprising a seat adapted to be supported on a sill of a window frame, a back pivotally connected with the seat, chains secured to the back and adapted to be connected with ythe Window frame, and means on the inner edge of the seat engaging the window frame and cooperating with the chains for maintaining the seat in position on the sill, guides projecting laterally from 'the seat, brace bars slidably mounted in the guides and provided with oppositely disposed teeth along their' opposite edges, the oppositely disposed teeth being adapted to engage opposite edgesV of the guide, and means :for locking ythe braces in adjusted position Within the guide, the

inner ends of the braces being adapted to engage the outer Wall of a building.

5. A oldable window scaffold comprising a seat adapted to be supported on the sill of a Window frame, a back pivotally connected to a longitudinal side edge of the seat, a foot rest pivotally connected With the other longitudinal side edge of the seat,

means adapted to engage the inner edge of the Window frame forrpreventing slippage of the Seat rointhe sill, means. secured to the back and adaptedvto-be connected with the window frame, and bracing` means adjustably connected with theseat adapted to engage the wall of al building, saidy back being foldable upon theseat with the rear face Y of the back in face tofface engagement with the under side of the seat, with the foot rest foldable upon the upper face of the seat.

MAX D-WoRK. 

